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x86-64-asm: More opcodes

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Implement some more opcodes, syscall, sysret, lfence, mfence, sfence.
This commit is contained in:
Michael Matz 2016-06-30 16:14:32 +02:00
parent 1a5eacb445
commit 920474115c
3 changed files with 22 additions and 0 deletions
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9
i386-asm.c
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@ -893,6 +893,15 @@ ST_FUNC void asm_opcode(TCCState *s1, int opcode)
pc = 0;
if (pa->instr_type & OPC_MODRM) {
if (!nb_ops) {
/* A modrm opcode without operands is a special case (e.g. mfence).
It has a group and acts as if there's an register operand 0
(ax). */
i = 0;
ops[i].type = OP_REG;
ops[i].reg = 0;
goto modrm_found;
}
/* first look for an ea operand */
for(i = 0;i < nb_ops; i++) {
if (op_type[i] & OP_EA)

7
tests/asmtest.S
View File

@ -607,6 +607,13 @@ int $0x10
rdmsr
rdpmc
ud2
#ifdef __x86_64__
syscall
sysret
lfence
mfence
sfence
#endif
emms
movd %edx, %mm3

6
x86_64-asm.h
View File

@ -88,6 +88,9 @@ ALT(DEF_ASM_OP2(btcw, 0x0fba, 7, OPC_MODRM | OPC_WLX, OPT_IM8, OPT_REGW | OPT_EA
DEF_ASM_OP0(rdtsc, 0x0f31)
DEF_ASM_OP0(rdmsr, 0x0f32)
DEF_ASM_OP0(rdpmc, 0x0f33)
DEF_ASM_OP0(syscall, 0x0f05)
DEF_ASM_OP0(sysret, 0x0f07)
DEF_ASM_OP0(ud2, 0x0f0b)
/* NOTE: we took the same order as gas opcode definition order */
@ -482,6 +485,9 @@ ALT(DEF_ASM_OP2(movhps, 0x0f17, 0, OPC_MODRM, OPT_SSE, OPT_EA | OPT_REG32 ))
DEF_ASM_OP2(sqrtps, 0x0f51, 0, OPC_MODRM, OPT_EA | OPT_SSE, OPT_SSE )
DEF_ASM_OP2(subps, 0x0f5c, 0, OPC_MODRM, OPT_EA | OPT_SSE, OPT_SSE )
DEF_ASM_OP0L(lfence, 0x0fae, 5, OPC_MODRM)
DEF_ASM_OP0L(mfence, 0x0fae, 6, OPC_MODRM)
DEF_ASM_OP0L(sfence, 0x0fae, 7, OPC_MODRM)
#undef ALT
#undef DEF_ASM_OP0
#undef DEF_ASM_OP0L